docs: Add 10.4 sha256 sums, news item and link release notes

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
(cherry picked from commit af0c82099b955f10471c15cb7a4dc8db29b84963)

Conflicts:
	docs/index.html
	docs/relnotes.html
diff --git a/docs/index.html b/docs/index.html
index 52d3144..a83754d 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -16,6 +16,13 @@
 
 <h1>News</h1>
 
+<h2>December 14, 2014</h2>
+<p>
+<a href="relnotes/10.4.html">Mesa 10.4</a> is released.  This is a new
+development release.  See the release notes for more information about
+the release.
+</p>
+
 <h2>December 5, 2014</h2>
 <p>
 <a href="relnotes/10.3.5.html">Mesa 10.3.5</a> is released.
diff --git a/docs/relnotes.html b/docs/relnotes.html
index 5691a94..267ffc2 100644
--- a/docs/relnotes.html
+++ b/docs/relnotes.html
@@ -21,6 +21,7 @@
 </p>
 
 <ul>
+<li><a href="relnotes/10.4.html">10.4 release notes</a>
 <li><a href="relnotes/10.3.5.html">10.3.5 release notes</a>
 <li><a href="relnotes/10.3.4.html">10.3.4 release notes</a>
 <li><a href="relnotes/10.3.3.html">10.3.3 release notes</a>
diff --git a/docs/relnotes/10.4.html b/docs/relnotes/10.4.html
index d816cdb..f46fd68 100644
--- a/docs/relnotes/10.4.html
+++ b/docs/relnotes/10.4.html
@@ -31,9 +31,11 @@
 </p>
 
 
-<h2>MD5 checksums</h2>
+<h2>SHA256 checksums</h2>
 <pre>
-TBD.
+abfbfd2d91ce81491c5bb6923ae649212ad5f82d0bee277de8704cc948dc221e  MesaLib-10.4.0.tar.gz
+98a7dff3a1a6708c79789de8b9a05d8042e867067f70e8f30387c15026233219  MesaLib-10.4.0.tar.bz2
+443a6d46d0691b5ac811d8d30091b1716c365689b16d49c57cf273c2b76086fe  MesaLib-10.4.0.zip
 </pre>